function soute

soundchannel=PsychPortAudio('Open');
welcomeSound=[sin(0.01*(1:10000)); sin(0.01*(1:10000))];
PsychPortAudio('FillBuffer',soundchannel, welcomeSound);
PsychPortAudio('Start',soundchannel);
WaitSecs(2);

PsychPortAudio('Close',soundchannel);

end
